Calendar

Venus at Greatest Elongation

Venus reaches maximum eastern elongation on October 29, 2021. After this date, you will see Venus head back towards the Sun on its way to inferior conjunction.

New Moon

New Moon. By the modern definition, New Moon occurs when the Moon and Sun are at the same geocentric ecliptic longitude. The part of the Moon facing us is completely […]

Full Moon

The Full Moon rises at sunset, and is visible all night. The Vatican Observatory's monthly Full Moon Meetup for Sacred Space Astronomy subscribers is held at 10:00 AM Tucson time.